Mold.



F. H.PORBIS.

MOLD.

APPLICATION FILED MAY 16, 1911.

1,067,420. Patented July 15, 1913.

2 SHBETSSHEET 1.

Inventor Attorneys- F. H. FORBIS.

MOLD.

APPLICATION FILED MAY 16, 1911.

1,067,420. Patented July 15, 1913.

2 SHEETS-SHEET 2.

Witnesses I Attornys FRANK I-I. FORBIS, OF AUSTIN, TEXAS.

Mom).

To all whom it may concern.

Be it known that I, FRANK H. FonBIs, a citizen of the United States,residing at Austin, in the county of Travis and State of Texas, haveinvented a new and useful Mold, of which the following is aspecificat-ion.

It is the object of the present invention to provide a novel form ofmold, adapted for i the formation of side-walks, curbs and the form ofstake adapted for insertion into the ground, to form a part of a mold inwhich a monolithic structure is fashioned.

A further object of the invention is to provide a novel method for thefashioning of monolithic structures.

VVit-h the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combi nation andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that Changes in the preciseembodiment of invention herein disclosed can be made within the scope ofwhat is claimed without departing from the spirit of the invention.

In the drawings,-Figure 1 shows the invention in perspective. the partsthereof being placed to form a side-walk or like structure havingrelatively small height; Fig. 2 is aperspective, showing the parts ofthe invention in the positions which they will assume when the device isemployed for the fashioning of a curb, or other structure, having aconsiderable height; Fig. 8 is a side elevation of one of the stakeswhich enter into the construct-ion of the mold; Fig. 4 is a longitudinalsection of the stake depicted in Fig. 3; Fig. 5 is a pers oective of oneof the arms which are assemb ed with the stake shown in Fig. 3, for thepurpose of holding the side boards of the mold upon the stakes; and Fig.6 is a longitudinal section showing a slightly modified form of stake.

In carrying out the invention, a plurality of stakes are provided, thestakes being denoted generally by the numeral 1. These stakes 1 may befashioned from any desired material, metal being ordinarily employed.The stakes 1 may be fashioned in any de- Specification of LettersPatent.

Application filed May 16, 1911.

Patented J uly 15, 1913. Serial No. 627,436.

sired lengths, depending upon the height of the structure which is to beformed in the mold of which the stakes l constitute constituent parts.The stakes 1 are fashioned at their lower ends, with flat blades 2,pointed as denoted by the numeral 3 in Fig. 3, the flat pointed bladesobviously facilitating the insertion ofthe stakes 1 into the earth. Attheir upper ends, the stakes 1 are provided with tubular, transverseheads 4, which, if desired, may be fashioned integrally with the stakes.In the blades 2 there are longitudinally extended slots 5, there beingin the body portions of the stakes, above the blades 2, otherlongitudinally eX- tended slots 6. Mounted in heads 4, are clampingelements, the same preferably taking the form of set screws 7. A crossbar 8, of any desired length, is slidable in the tubular heads 4 ofeach. pair of stakes 1, the cross bar 8 being held in place upon thestakes 1, by means of the set screws 7.

The invention further includes a plurality of arms, denoted generally bythe numeral 9 in Fig. 5, these arms 9 being adapted to be assembled withthe stakes 1, for the purpose of holding the side boards of the moldupon the stakes. These arms consist ofa threaded shank l0, merging intoa flat head 11, disposed in substantially the same plane with the shank10, the head 11 terminating at its outer edge, in an angularly disposedflange 12. The shanks 10 of the arms 9 are inserted into the slots 5, orinto the slots 6, wing nuts 14 being applied to the shanks 10, the wingnuts 14 engaging the stakes 1.

In Fig. 6, a slight modification of the invention is shown. Referring,then to Fig. 6, the stake is denoted generally by the numeral 15, thestake being slotted, as be fore, as shown .at 16. The stake 15 isequipped at its upper end with a transverse head, the same, in thepresent instance, taking that form of a pipe coupling which is known asa cross, the cross being denoted by the numeral 17 Into the side of thecross 17, a set screw 18 is inserted, the same being adapted to engagethe cross bar 8, as will be readily understood, the cross bar 8 beinginserted into one of the lateralbranches 19 of the cross. The upper endof the cross may be closed by means of a plug 20. Fig. 6 is introducedinto the drawings, for the purpose of showing that the device may befashioned from common structural pipe elements; although, when thestructure is made commercially, the stakes and the transverse headswhich are upon the upper ends thereof, will ordinarily be cast in onepiece, as shown in Fig. 4:.

Passing now to a description of the opera tion of the device, Fig. 1 maybe examined with profit. hen it is desired to form a side-walk 23, orother relatively low struc ture, the stakes 1 are driven into the groundin pairs, each pair of the stakes 1 being connected by a cross bar 8.The side'boards 21 of the mold are engaged with the arms 9, the arms 9being, in the present instance, mounted in the slots 5 which are locatedin blades 2. The flat heads 11 of the arms 9 extend across the upper andlower edges of the side-boards 21, the flanges 12 engaging the innerfaces of the side boards, as clearly appearing in Fig. 1. Obviously, byrotating the wing nuts 14, the side boards 21 will be bound firmlyagainst the flat blades 2 of the stakes 1. At this point it may be notedthat the blades 2 not only constitute a means whereby the stakes may bereadily inserted into the ground, but, at the same time, the bladesafford flat surfaces, against which the side boards 21 may be bound andbe held firmly. The end board 22 is, as will be understood, held inplace between the side boards 21.

The operation above described is carried out in connection with theformation of a curb or the like, as shown in Fig. 2, saving that one setof the arms 9 are mounted in the slots (5. In Fig. 2, the sides of themold are denoted by the numeral 2 1, the ends of the mold by the numeral25, and the curb proper which is formed in the mold, by the numeral 26.In fashioning the curb 26, the plastic material is placed in the mold tothe desired height, the plastic material, however, being terminatedshort of the top of the mold, as clearly shown in Fig. 2. After thematerial has taken an initial set, one of the side boards 24: is slackedaway, this result being accomplished by loosening the set screws 7 andpermitting the cross bars 8 to slide in the transverse heads 1 of thestakes 1. By this operation, one of the side boards 2% is spacedslightly from the monolithic structure 26. A grout of neat cement, or ofa mixture relatively rich in cement, is then prepared, and this grout ispoured between the side board 2a and the lateral face of the monolithicstructure 26, the grout likewise covering the top of the structure 26.The side board 24 which has been slacked away, to permit the insertionof the grout, is then restored to its normal place, and the addedmaterial is permitted to set. When the mold is finally knocked down, thecompleted structure will have a smooth exterior finish, such exteriorfinish being produced without a final troweling.

Owing to the fact that the arms 9 are vertically adjustable in thestakes 1, the upper edges of the side boards of the mold may be adjustedat ditlerent heights, permitting the workman. to bring the upper edgesof the side boards of the mold, to a proper grade. It is to be notedthat no nails or other securing elements are employed in the structure,and therefore, the side boards of the mold, may readily be adjusted tograde, and the entire structure may be taken down and set up, as manytimes as may be desired, without injuring the elements of the device.

It is to be noted that the cross bars 8 may be employed for seating thestakes 1 in the ground, and likewise, in removing the stakes from theground, the cross bars 8 may be employed as levers, to rotate the stakes1 slightly, thereby loosening their hold upon the ground, so that theymay be removed readily.

If desired, the heads 1 may be provided with upstanding lugs 50, whichlugs are adapted to receive the blows of the maul wherewith the stakes 1are driven into the earth.

Having thus described the invention, what is claimed is:

In a device of the class described, a stake having a fiat blade at itslower end and provided with an enlarged head at its upper end adapted toreceive the blows of a tool to drive the blade into the ground, thestake,

between the head and blade, being thicker.

than the blade to prevent a buckling of the stake under the blows of adriving tool, there being a clamping device in the head whereby the headmay be connected with a bar to unite one stake with another, and tofacilitate the rotation of the stake to break the hold of the blade uponthe grounchthe stake having longitudinal slots, one of which is in thethicker portion of the stake, and

another in the blade, the slots being terminally spaced to prevent aweakening of the stake, the slot which is located in the blade servingto facilitate the grip of the blade upon the ground; holding devicesadjustable in the slots; and amo-ld forming member engaged by theholding devices.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

FRANK I'I. FOR-BIS Witnesses:

En. ANDERSON, J. BOULDIN Ixncron.

Copies or this patent may be obtained for five cents each, by addressingthe Commissioner of Paten Washington, D. C.

